[firebird-support] is it a bug?

[hamacker sirhamac...@gmail.com [firebird-support]]

If I try in FB3 (latest version):
CREATE
  USER  'ROBOT.CUSTOS' -- wont run
  PASSWORD  'password'
  FIRSTNAME 'ROBOT'
  MIDDLENAME 'DE'
  LASTNAME 'CUSTOS' ;

Not run! but If I try:
  CREATE
  USER  "ROBOT.CUSTOS" -- it´s run
  PASSWORD  'password'
  FIRSTNAME 'ROBOT'
  MIDDLENAME 'DE'
  LASTNAME 'CUSTOS' ;

I think that double quotes are used only if you want case sensitive, but I
see that only method to create login with "." and maybe others separators.